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INTERFACE CIRCUIT FOR BRIDGING VOLTAGE DOMAINS

  • US 20100026359A1
  • Filed: 05/18/2009
  • Published: 02/04/2010
  • Est. Priority Date: 08/01/2008
  • Status: Active Grant
First Claim
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1. An interface circuit for use between components using different voltage domains, comprising:

  • a transistor receiving an input voltage and providing an output voltage;

    a voltage source, proving a clipping voltage to a terminal of the transistor, preventing the output voltage of the transistor from rising above the clipping voltage;

    a capacitor connected between the input voltage and a input terminal of the transistor; and

    a blocking voltage source, selectively connected between the capacitor and the input of the transistor, blocking a range of voltages input by the input voltage.

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